Listing is for a Set of 4 Steel Casters with Steel Gray Iron Wheels. These Steel Casters can hold a weight capacity of 350 lbs per wheel making a total capacity of 1,400 lbs per set of 4. This 4 Pack of Steel Wheel Casters is great for interior decorators and DIY furniture makers from Professionals to Hobbyists who want to add a nice rustic vintage look and style to ones furniture. These Wheels are the highest quality metal wheels on the market made by state of the art manufacturing using a ISO8001 Facility and RoHs Compliant as well as NSF Certified for Restaurant use as well. This set of casters comes with 2 Swivels with Brakes allowing you to lock the wheel by a side brake lever and 2 regular swivel casters. These casters rotate 360 degrees and come with a industry standard plate sized. The overall height of these casters from the bottom of the wheel to the top of the mounting plate is 4-3/16" meaning this will raise your height of your equipment or table by 4-3/16" additional height. Metal Wheel Casters can mark wooden floors and one should be careful on expensive hardwood floors and tile due to the hardness of the Steel Wheels. These Steel Wheel Casters are used by many people wanting to add a nice rustic touch to their furniture or just to move heavy objects with ease.